scholarly journals Monolithic 1 × 8 DWDM Silicon Optical Transmitter Using an Arrayed-Waveguide Grating and Electro-Absorption Modulators for Switch Fabrics in Intra-Data-Center Interconnects

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 991
Author(s):  
Uiseok Jeong ◽  
Dong Ho Lee ◽  
Kyungwoon Lee ◽  
Jung Ho Park
Keyword(s):  
Light Source ◽  
Wavelength Division Multiplexing ◽  
Data Center ◽  
Modulation Depth ◽  
Oxide Semiconductor ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Switch Fabrics ◽  
Optical Transmitter ◽  
Arrayed Waveguide

In this study, we propose an eight-channel monolithic optical transmitter using silicon electro-absorption modulators (EAMs) based on free-carrier injection by Schottky junctions. The transmitter consists of a 1 × 8 silicon arrayed-waveguide grating (AWG) and eight 500-μm-long EAMs on a 5.41 × 2.84 mm2 footprint. It generates eight-channel dense wavelength-division multiplexing (DWDM) outputs with 1.33 nm channel spacing (Δλ) in the C-band from a single broadband light source and modulates each channel with over 3 dB modulation depth at 6 V peak-to-peak. The experimental results showed that the feasibility of a homogeneous silicon DWDM transmitter with a single light source for switch fabrics in intra-data-center interconnects over heterogeneous integration with regards to more complementary metal–oxide–semiconductor (CMOS) compatibility.

Design and Simulation of Arrayed Waveguide Grating for Miniature Raman Spectrometer

2014 ◽  
Vol 644-650 ◽  
pp. 3588-3592
Author(s):  
Ying Chao Xu ◽  
Qing Na Wang ◽  
Wen Zhang Zhu
Keyword(s):  
Wavelength Division Multiplexing ◽  
Insertion Loss ◽  
Phase Error ◽  
Optical Channel ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Raman Spectrometer ◽  
Technical Requirements ◽  
Arrayed Waveguide ◽  
Miniature Raman Spectrometer

Arrayed waveguide grating (AWG) is a very popular dense wavelength division multiplexing (DWDM) device, which is produced in the field of optical communication technology. Instead of traditional grating and lens spectral system, AWG is used as the spectral chip in miniature Raman spectrometer. It’s quite important for miniature Raman spectrometer in miniaturization and low cost. This paper analyzed the basic principles of AWG device, and introduces the insertion loss, crosstalk and phase error performance parameters, also focuses on the specific technical requirements about wavelength, optical channel number, phase error, wavelength resolution and bandwidth, which are applied in miniature Raman spectrometer. Some new researches and a series of related simulation have been made, finally won the 1 * 40 channels AWG spectral chips, with wavelength range of 880-920 nm, insertion loss of center wavelengths is better than-0.9 dB.

scholarly journals A Simple All-Optical Water Level Monitoring System Based on Wavelength Division Multiplexing with an Arrayed Waveguide Grating

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3095 ◽  
Author(s):  
Hoon-Keun Lee ◽  
Jaeyul Choo ◽  
Gangsig Shin
Keyword(s):  
Water Level ◽  
Monitoring System ◽  
Wavelength Division Multiplexing ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Arrayed Waveguide ◽  
Level Monitoring ◽  
Water Level Monitoring

We propose and demonstrate a simple water level monitoring system based on the wavelength division multiplexing (WDM) for the spent fuel pool (SFP) at a nuclear power plant. The basic principle is based on the measurement of the optical power spectra by the Fresnel reflection according to the change of the refractive index at the end facet of the optical fiber tip (OFT). An arrayed waveguide grating (AWG) is employed to achieve multi-channel sensing capability with a C-band broadband light source (BLS) based on amplified spontaneous emission (ASE). The feasibility of the proposed scheme is investigated with a simulation and experimentation. We also investigate the limiting factor for remote transmission. The system performance is degraded by the Rayleigh backscattering of the BLS light, but it can be operated over long distances within 10 km with 5 dB of difference peak power margin.

scholarly journals ARRAYED WAVEGUIDE GRATING PADA DENSE WAVELENGTH DIVISION MULTIPLEXING

TRANSIENT ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 179
Author(s):  
Arkidianabela Anggara Dewi ◽  
Teguh Prakoso ◽  
Aghus Sofwan
Keyword(s):  
Wavelength Division Multiplexing ◽  
Q Factor ◽  
Arrayed Waveguide Grating ◽  
Dense Wavelength Division Multiplexing ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Waveguide Filters ◽  
Arrayed Waveguide ◽  
Array Waveguide Grating

DWDM (Dense Wavelength Division Multiplexing) adalah suatu teknik multiplexing yang mampu mentransmisikan lebih dari 400 panjang gelombang dalam satu serat optik. Laju pengiriman data menggunakan media serat optik dapat mencapai 1 Tbps atau 1.000 Gbps. DWDM merupakan suatu perbaikan dari WDM. Inti perbaikan yang dimiliki oleh teknologi DWDM terletak pada jenis filter, serat optik dan penguat amplifier. Jenis filter yang umum dipergunakan salah satunya adalah  Array Waveguide Grating  (AWG).  Pada Penelitian ini dianalisis kinerja suatu Array Waveguide Filters (AWG) yang mampu digunakan pada DWDM.  Pada Penelitian ini dilakukan dengan menggunkan 2 software. Pertama, menggunakan software Optisystem 7 untuk memodelkan sistem DWDM. Kedua, menggunakan software OptiBPM untuk verifikasi AWG. Pada Optisystem didapatkan nilai konfigurasi DWDM yang optimal yaitu pada C Band dengan spasi kanal 50GHz dan jumlah wavelength 64. Sedangkan pada OptiBPM didapatkan untuk konfigurasi DWDM tersebut diperlukan AWG dengan dengan sudut orientasi 53 derajat, panjang FSR 1500um, lebar angular 11,4 derajat dengan ukuran 15000x10000um sehingga didapatkan nilai BER, Q-factor dan crosstalk yang memiliki perbedaan namun telah mencapai kriteria  yaitu dengan Q factor antara 8,43 sampai dengan 14,09 sedangkan untuk BER dari 1,719x10-40 sampai dengan 1,19x10-17 dan crosstalk antara -149 dB sampai dengan -40,8 dB.

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